Stollenwerk, Tobias und Kroha, Johann (2015) Theory of Curie temperature enhancement in electron-doped EuO. Physical Review B - Condensed Matter and Materials Physics, 92, Seite 205119. American Physical Society. doi: 10.1103/PhysRevB.92.205119. ISSN 1098-0121.
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Offizielle URL: https://doi.org/10.1103/PhysRevB.92.205119
Kurzfassung
We present a comparative, theoretical study of the doping dependence of the critical temperature TC of the ferromagnetic insulator-metal transitions in Gd-doped and O-deficient EuO, respectively. The strong TC enhancement in Eu1−xGdxO is due to Kondo-like spin fluctuations on the Gd sites, which are absent in EuO1−x. Moreover, we find that the TC saturation in Eu1−xGdxO for large x is due to a reduced activation of dopant electrons into the conduction band, in agreement with experiments, rather than antiferromagnetic long-range contributions of the RKKY interaction. The results shed light on possibilities for further increasing TC.
elib-URL des Eintrags: | https://elib.dlr.de/100547/ | ||||||||||||
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Dokumentart: | Zeitschriftenbeitrag | ||||||||||||
Titel: | Theory of Curie temperature enhancement in electron-doped EuO | ||||||||||||
Autoren: |
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Datum: | 17 November 2015 | ||||||||||||
Erschienen in: | Physical Review B - Condensed Matter and Materials Physics | ||||||||||||
Referierte Publikation: | Ja | ||||||||||||
Open Access: | Ja | ||||||||||||
Gold Open Access: | Nein | ||||||||||||
In SCOPUS: | Ja | ||||||||||||
In ISI Web of Science: | Nein | ||||||||||||
Band: | 92 | ||||||||||||
DOI: | 10.1103/PhysRevB.92.205119 | ||||||||||||
Seitenbereich: | Seite 205119 | ||||||||||||
Verlag: | American Physical Society | ||||||||||||
ISSN: | 1098-0121 | ||||||||||||
Status: | veröffentlicht | ||||||||||||
Stichwörter: | Quantum Many Body Physics Condensed Matter Physics Numerical Methods | ||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||
HGF - Programm: | Raumfahrt | ||||||||||||
HGF - Programmthema: | Technik für Raumfahrtsysteme | ||||||||||||
DLR - Schwerpunkt: | Raumfahrt | ||||||||||||
DLR - Forschungsgebiet: | R SY - Technik für Raumfahrtsysteme | ||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | R - Vorhaben SISTEC (alt) | ||||||||||||
Standort: | Köln-Porz | ||||||||||||
Institute & Einrichtungen: | Institut für Simulations- und Softwaretechnik > Verteilte Systeme und Komponentensoftware | ||||||||||||
Hinterlegt von: | Stollenwerk, Tobias | ||||||||||||
Hinterlegt am: | 09 Dez 2015 16:18 | ||||||||||||
Letzte Änderung: | 13 Jun 2023 13:33 |
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